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158936260489 = 1061639723417
BaseRepresentation
bin1001010000000101010…
…1101101111110001001
3120012020112121120201021
42110001111231332021
510101000140313424
6201003031352441
714324405631556
oct2240125557611
9505215546637
10158936260489
116144a4149a6
1226977522721
1311caba73666
14799a533a2d
1542033ba4e4
hex250156df89

158936260489 has 8 divisors (see below), whose sum is σ = 159117722568. Its totient is φ = 158754860160.

The previous prime is 158936260477. The next prime is 158936260493. The reversal of 158936260489 is 984062639851.

It can be written as a sum of positive squares in 4 ways, for example, as 1174775625 + 157761484864 = 34275^2 + 397192^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 158936260489 - 215 = 158936227721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158936260499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6775509 + ... + 6798925.

It is an arithmetic number, because the mean of its divisors is an integer number (19889715321).

Almost surely, 2158936260489 is an apocalyptic number.

It is an amenable number.

158936260489 is a deficient number, since it is larger than the sum of its proper divisors (181462079).

158936260489 is a wasteful number, since it uses less digits than its factorization.

158936260489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30875.

The product of its (nonzero) digits is 22394880, while the sum is 61.

The spelling of 158936260489 in words is "one hundred fifty-eight billion, nine hundred thirty-six million, two hundred sixty thousand, four hundred eighty-nine".

Divisors: 1 1061 6397 23417 6787217 24845437 149798549 158936260489